Spatial Variability of Surface Soil Moisture and Bulk Density in a Slope-land at Different Stages After a Rainfall

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Spatial Variability of Surface Soil Moisture and Bulk Density in a Slope-land at Different Stages After a Rainfall

更新时间：2024-11-07

- Spatial Variability of Surface Soil Moisture and Bulk Density in a Slope-land at Different Stages After a Rainfall
- Vol. 25, Issue 5, (2011)
- 作者机构：
  
  1. 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室
  2. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室
  3. 中国科学院青藏高原研究所环境变化与地表过程重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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Spatial Variability of Surface Soil Moisture and Bulk Density in a Slope-land at Different Stages After a Rainfall[J]. 2011, 25(5).
DOI：

Spatial Variability of Surface Soil Moisture and Bulk Density in a Slope-land at Different Stages After a Rainfall[J]. 2011, 25(5). DOI：

摘要

采用经典统计学方法

通过网格布点

研究黄土高原坡地表层土壤水分和容重在降雨后不同时段的空间变异特征。结果表明:(1)降雨后第1天

表层土壤水分和容重的变异程度分别为中等、弱变异性;在各坡向间土壤水分呈阴坡>阳坡>山脊的变化趋势

容重为阴坡>山脊>阳坡;(2)降雨后第20天

土壤水分和容重的变异程度均保持不变

但土壤水分在不同坡向间的数量特征发生改变(阴坡>山顶>阳坡)

而容重的变化趋势保持不变;(3)表层土壤水分具有弱的时间稳定性

而容重的时间稳定性较强。(4)相关分析表明

降雨后第1天

山脊上的土壤水分与容重具有极显著的负相关关系(P<0.01)

而降雨后第20天

阴坡土壤水分(容重)与山顶土壤水分呈显著正(负)相关(P<0.05)。相关结果可为黄土高原坡地水分管理、水土过程调控提供参考。

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